University student is still basically an adult, and Gen expresses as much with a dismissive snort and an almost charmingly cliche retort:

"Whatever."

He taps the ash off the end of his cigarette before taking another long drag, returning his gaze back towards the far wall. Though he'd glanced back briefly just to confirm that yes, Ryunosuke doesn't look anything like an adult, he otherwise has no interest in looking at their prisoner. Whose fate is unknown, which he'd rather not think about.

"... uni student or not, if you really were just normal, then -- it's just bad luck you're stuck where you are. And it's my job here to make sure you stay there. S'all."